getSecret.js

import http from "k6/http";
import { check } from "k6";
import aws from "https://gist.githubusercontent.com/MStoykov/38cc1293daa9080b11e26053589a6865/raw/9eee2c2f4af6d193d8e93719b6de2e09e451aa52/aws_k6.js";

function getSecret(region, keyname, params = {}) {
    var body = `{"SecretId": "${keyname}"}`
    var options =  {};
    options.method = "POST";
    options.signSessionToken = true;
    options.doubleEscape = false;
    options.headers = {}
    if (typeof params !== "undefined" && typeof params.headers !== "undefined") {
        options.headers = params.headers;
    }
    options.headers["X-Amz-Target"] = "secretsmanager.GetSecretValue";
    options.headers["Content-Type"] = "application/x-amz-json-1.1";
    params.headers = options.headers
    var url =  aws.createPresignedURL(
        options.method,
        "secretsmanager."+ region+ ".amazonaws.com",
        "/",
        "secretsmanager",
        body, 
        options
    );

    return http.request(options.method, url, body , params)
}

export default function () {
    var region = "us-east-1";
    var keyname = "cool secret"
    var res = getSecret(region, keyname )
    console.log(JSON.stringify(res, null, "  "));
}